CN114935026A - Experimental valve for measuring valve force value, measuring method thereof and one-way valve - Google Patents
Experimental valve for measuring valve force value, measuring method thereof and one-way valve Download PDFInfo
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- CN114935026A CN114935026A CN202210663144.XA CN202210663144A CN114935026A CN 114935026 A CN114935026 A CN 114935026A CN 202210663144 A CN202210663144 A CN 202210663144A CN 114935026 A CN114935026 A CN 114935026A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 26
- 238000005259 measurement Methods 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000000691 measurement method Methods 0.000 claims description 3
- 238000011179 visual inspection Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 2
- 238000012827 research and development Methods 0.000 abstract description 3
- 238000005034 decoration Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000004429 Calibre Substances 0.000 description 1
- 238000012356 Product development Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The invention discloses an experimental valve for measuring a valve force value, a measuring method thereof and a one-way valve, comprising a valve body, wherein an annular limiting surface is arranged in the valve body; the valve cover is fixedly arranged at the upper end of the mounting hole and is provided with a valve cover central hole; the valve cover adjusting block is fixedly arranged in the valve cover central hole in an axially adjustable mode, a piston hole is formed in the bottom of the valve cover adjusting block, and the upper end of the piston hole is closed; the piston adjusting block is fixedly arranged in the piston hole in an axially adjustable manner, a piston guide hole is formed in the piston adjusting block, and the lower end of the piston adjusting block protrudes out of the lower end of the valve cover adjusting block; the rod part of the piston is axially and slidably matched and arranged in the piston guide hole; and the upper end of the elastic piece is connected with the valve cover adjusting block, and the lower end of the elastic piece is connected with the piston so that the head of the piston is abutted to the annular limiting surface. Greatly shortens the research and development period and improves the efficiency.
Description
Technical Field
The invention belongs to the valve technology, and particularly relates to an experimental valve for measuring a valve force value, a measuring method thereof and a one-way valve.
Background
Disclosed a check valve in patent CN206439455U, including valve body and valve cap, valve body bottom left side is the influent stream mouth, and the right side is for the outflowing port, the influent stream mouth inboard is equipped with the slope heavy-calibre opening, opening and influent stream mouth are 60 angles of inclination, the opening upper end is equipped with the case of the same angle, valve body upper end threaded connection has the valve cap, valve cap inner end lateral wall is equipped with first recess, first recess inside wall sliding connection has the case, the packing ring has been cup jointed to the one end that the valve cap was kept away from to the case, the packing ring lower extreme is equipped with the gasket, the gasket cup joints on the case, the gasket lower extreme is equipped with lock nut. The valve cap and the valve core are connected through the first spring and the second spring, so that the valve core and the inner wall of the first groove of the valve cap slide, the sealing performance of the connection part of the valve body and the valve cap is improved through the mouth-shaped ring, and the valve clack is automatically closed under the action of factors such as fluid pressure difference, self gravity, the thrust of the spring and the like so as to prevent the fluid from flowing backwards.
However, the spring groove of the valve has an upward hole, and in the opening and closing process of the valve, media can remain in the hole and are not easy to remove, so that the valve is not suitable for the cleaning industry.
Therefore, I have researched and developed and designed the angle type check valve that the piston hole set up downwards, but discover in the manufacturing process that when opening of valve and the biggest actual force value are inconsistent with theoretical power value, need go to adjust the distance in spring work area, the mode of usually adopting is to reprocess accessories, makes actual power value lean on above the theoretical power value, and this kind of mode often needs to reprocess and can obtain the data that wants to, and reprocess has brought the extension of product development cycle, and is inefficient.
Therefore, the present invention has been devised to solve the problem that it takes much time and effort to repair the parts when verifying that the spring force value in the valve is deviated.
Disclosure of Invention
Aiming at the defects of the prior art, the invention designs the experimental valve for measuring the valve force value, greatly shortens the research and development period and improves the efficiency.
The technical scheme disclosed by the invention is as follows: laboratory valve for valve force value determination, comprising:
the valve body is provided with a flow inlet at the left end and a flow outlet at the right end, a mounting hole is formed in the valve body between the flow inlet and the flow outlet, and an annular limiting surface is arranged in the valve body;
the valve cover is fixedly arranged at the upper end of the mounting hole and is provided with a valve cover central hole;
the valve cover adjusting block is fixedly arranged in the valve cover central hole in an axially adjustable manner, the bottom of the valve cover adjusting block is provided with a piston hole, and the upper end of the piston hole is closed;
the piston adjusting block is fixedly arranged in the piston hole in an axially adjustable manner, a piston guide hole is formed in the piston adjusting block, and the lower end of the piston adjusting block protrudes out of the lower end of the valve cover adjusting block;
the rod part of the piston is axially and slidably matched and arranged in the piston guide hole;
the upper end of the elastic piece is connected with the valve cover adjusting block, and the lower end of the elastic piece is connected with the piston to enable the head of the piston to be abutted against the annular limiting surface.
On the basis of the scheme, preferably, the lower end of the piston guide hole is fixedly provided with a shaft sleeve, and the rod part is in clearance fit with the shaft sleeve.
On the basis of above-mentioned scheme, as preferred, the lower terminal surface of valve gap and the up end of valve body all have the seal groove, and the valve gap gasket is installed in the seal groove, passes through valve gap gasket sealing connection between valve gap and the valve body.
On the basis of the above scheme, preferably, the valve cover adjusting block is further provided with an exhaust hole communicated with the piston hole.
On the basis of the scheme, preferably, the upper end face of the head is fixedly connected with the rod part, the lower end face of the head is pasted with the sealing gasket, and the screw penetrates through the sealing ring and the sealing gasket to fix the sealing ring and the sealing gasket on the lower end face of the head.
On the basis of the scheme, preferably, the included angle between the axis of the central hole of the valve cover and the horizontal plane is 45 degrees.
On the basis of the scheme, the valve cover adjusting block and the valve cover and the piston adjusting block and the valve cover adjusting block are preferably in threaded fit to realize axial adjustable fit.
The valve force measuring method utilizes the experimental valve to cooperate with a push-pull dynamometer for measurement,
the measurement method is as follows:
a: cutting, namely cutting the assembled experimental valve to cut off part of the valve body, so that the contact condition of the piston head and the annular limiting surface can be observed visually;
b: measuring an opening force value, abutting the head of the piston by using a push-pull force meter, and taking the value of the push-pull force meter in the state as the valve opening force value when the head of the piston is separated from the annular limiting surface by visual inspection;
c: determining an opening force value, comparing the measured valve opening force value with a preset force value, if the measured valve opening force value is not equal to the preset force value, driving the valve cover adjusting block to move in the axial direction of the valve cover adjusting block, adjusting the minimum distance between the lower end surface of the valve cover adjusting block and the annular limiting surface until the measured valve opening force value is the same as the preset force value, and determining the relative position relationship between the valve cover adjusting block and the valve cover;
d: measuring the maximum force value, continuously supporting the push-pull dynamometer until the push-pull dynamometer is not moved, at the moment, supporting the upper end surface of the piston head against the lower end surface of the piston adjusting block, and taking the numerical value of the push-pull dynamometer as the maximum force value in the state;
e: and (3) determining a maximum force value, comparing the measured maximum force value of the valve with a preset maximum force value, if the measured maximum force value of the valve is not equal to the preset maximum force value, driving the piston adjusting block to move in the axial direction of the piston adjusting block, adjusting the minimum distance between the piston adjusting block and the annular limiting surface until the measured maximum force value of the valve is the same as the preset maximum force value, and determining the relative position relation between the piston adjusting block and the valve cover adjusting block.
On the basis of the above scheme, preferably, when a part of the valve body is cut, the part of the valve body, which is not larger than one half of the circumference of the annular limiting surface, is cut away from the lower part of the annular limiting surface by taking the annular limiting surface as a reference, so that the contact condition of the head of the piston and the annular limiting surface is exposed.
According to the method for manufacturing the check valve by using the measuring method, the piston adjusting block, the valve cover adjusting block and the valve cover are processed into an integral structure according to the relative position relationship between the valve cover adjusting block and the valve cover and between the valve cover adjusting block and the piston adjusting block when the opening force value and the maximum force value are determined in the measuring method.
Compared with the prior art, the invention has the following beneficial effects:
the application provides an experimental valve, survey in-process is simple, and is convenient, swift.
The valve opening force value can be adjusted as required, the maximum force value can be adjusted as required, and the opening force value and the maximum force value are subjected to fixed value, so that the one-way valve is manufactured according to the fixed value.
Avoiding a large amount of repair work and time and shortening the research and development period of products.
Drawings
FIG. 1 is a schematic diagram of the structure of the experimental valve.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
As shown in fig. 1, fig. 1 is a schematic structural view of a test valve in which a cut-away portion (cut-away half or less) of a valve body is located within a dashed box, and an arrow indicates a cutting-away direction. The experimental valve for valve force measurement is designed based on the fact that an elastic member (spring) is not replaced, and comprises:
the valve comprises a valve body 1, wherein the left end of the valve body is provided with a flow inlet 2, the right end of the valve body is provided with a flow outlet 3, a mounting hole is formed in the valve body between the flow inlet and the flow outlet, the mounting hole is usually a round hole, an annular limiting surface 11 is arranged in the valve body, the annular limiting surface is usually a circular ring, and an elliptical ring can also be used;
the valve cover 4 is fixedly arranged at the upper end of the mounting hole, a valve cover central hole is formed in the valve cover, the valve cover central hole is preferably a circular hole, and the internal thread can be conveniently machined to form threaded fit with a subsequent valve cover adjusting block;
the valve cover adjusting block 5 is axially and fixedly arranged in a valve cover central hole in an adjustable mode, the fixed mounting mode with the adjustable axis is threaded fit, external threads are arranged on the valve cover adjusting block, internal threads are arranged on the valve cover, the threaded fit realizes that the valve cover adjusting block can generate relative displacement in the axial direction relative to the valve cover through the simplest matching mode, the adjustment is convenient, and of course, the adjustment mode can also be realized by means of other linear motion mechanisms, such as a screw rod sliding block structure and the like, the bottom of the valve cover adjusting block is provided with a piston hole 51, and the upper end of the piston hole is closed;
the piston adjusting block 6 is axially and adjustably fixedly arranged in the piston hole, the adjustable fixed installation mode is threaded connection, a piston guide hole 61 is formed in the piston adjusting block, and the lower end of the piston adjusting block protrudes out of the lower end of the valve cover adjusting block;
the rod part of the piston 7 is axially and slidably arranged in the piston guide hole in a matching manner, and is preferably in clearance fit;
the elastic element 8 is usually a spring, or other elastic elements with resetting performance can be adopted, the upper end of the elastic element is connected with the valve cover adjusting block, the lower end of the elastic element is connected with the piston, the head of the piston is abutted against the annular limiting surface to form sealing, and therefore the opening state between the inflow opening and the outflow opening is formed.
By designing the valve cover adjusting block and the piston adjusting block, the maximum force value can be adjusted at will while the opening force value is adjusted.
The lower extreme fixed mounting axle sleeve 62 of piston guiding hole, clearance fit between pole portion and the axle sleeve, the internal diameter of axle sleeve should slightly be less than the internal diameter of piston guiding hole, and the piston can not produce the friction with between the piston guiding hole in the motion process, improves life.
The lower terminal surface of valve gap and the up end of valve body all have the seal groove, and valve gap gasket 41 installs in the seal groove, passes through valve gap gasket sealing connection between valve gap and the valve body.
The valve cover adjusting block is also provided with an exhaust hole communicated with the piston hole, and the axial direction of the exhaust hole is the radial direction of the piston hole.
The upper end surface of the head part is fixedly connected with the rod part, the lower end surface is adhered with a sealing gasket 71, and a screw penetrates through the sealing ring 72 and the sealing gasket to fix the sealing ring and the sealing gasket on the lower end surface of the head part.
The included angle between the axis of the center hole of the valve cover and the horizontal plane is 45 degrees, so that an angle-shaped one-way valve is formed, and the phenomenon of pressure fluctuation is effectively prevented.
The valve force value measuring method utilizes the experimental valve to be matched with a push-pull dynamometer for measurement,
the measurement method is as follows:
a: cutting, namely cutting the assembled experimental valve, and cutting off part of the valve body, so that the contact condition of the piston head and the annular limiting surface can be observed visually;
b: measuring an opening force value, abutting the head of the piston by using a push-pull force meter, and when the head of the piston is separated from the annular limiting surface by visual inspection, taking the value of the push-pull force meter in the state as the valve opening force value;
c: determining an opening force value, comparing the measured valve opening force value with a preset force value, if the measured valve opening force value is not equal to the preset force value, driving the valve cover adjusting block to move in the axial direction of the valve cover adjusting block, adjusting the minimum distance between the lower end surface of the valve cover adjusting block and the annular limiting surface until the measured valve opening force value is the same as the preset force value, and determining the relative position relationship between the valve cover adjusting block and the valve cover;
d: measuring the maximum force value, continuously supporting the push-pull dynamometer until the push-pull dynamometer is not moved, at the moment, supporting the upper end surface of the piston head against the lower end surface of the piston adjusting block, and taking the numerical value of the push-pull dynamometer as the maximum force value in the state;
e: and (3) determining a maximum force value, comparing the measured maximum force value of the valve with a preset maximum force value, if the measured maximum force value of the valve is not equal to the preset maximum force value, driving the piston adjusting block to move in the axial direction of the piston adjusting block, adjusting the minimum distance between the piston adjusting block and the annular limiting surface until the measured maximum force value of the valve is the same as the preset maximum force value, and determining the relative position relation between the piston adjusting block and the valve cover adjusting block.
The measuring method is simple, convenient to operate, high in efficiency and capable of greatly shortening the product forming period without repairing the valve cover for many times.
When part of the valve body is cut, the annular limiting surface is used as reference, and the part of the valve body, which is not larger than one half of the circumference of the annular limiting surface, is cut off from the lower part of the annular limiting surface, so that the contact condition of the head of the piston and the annular limiting surface is exposed.
According to the method for manufacturing the check valve by using the measuring method, the piston adjusting block, the valve cover adjusting block and the valve cover are processed into an integral structure according to the relative position relationship between the valve cover adjusting block and the valve cover and between the valve cover adjusting block and the piston adjusting block when the opening force value and the maximum force value are determined in the measuring method.
The experimental valve and the check valve manufactured by the corresponding measuring method have the following advantages:
piston hole setting down compares the setting up among the prior art, and in the valve switch in-process, the medium can not remain in the hole, is applicable to sealed, cleanliness and the vital large-scale gas distribution application occasion of purity.
The piston hole is downward, sliding seal does not need to be arranged between the piston rod and the hole wall of the piston hole, sealing maintenance and maintenance are not needed to be carried out on the piston hole, and the service life of a product is prolonged.
The sealing gasket is soft sealing, and when the valve is closed, the situation that the sealing point is gapped and the valve cannot be completely closed due to insufficient concentricity of the piston and the valve body can be prevented.
All hole site designs are in the valve cavity, and when the valve was closed, the medium can in time be got rid of, and is difficult for remaining.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. Laboratory valve for valve force value determination, characterized by comprising:
the valve body is provided with a flow inlet at the left end and a flow outlet at the right end, a mounting hole is formed in the valve body between the flow inlet and the flow outlet, and an annular limiting surface is arranged in the valve body;
the valve cover is fixedly arranged at the upper end of the mounting hole and is provided with a valve cover central hole;
the valve cover adjusting block is fixedly arranged in the valve cover central hole in an axially adjustable mode, a piston hole is formed in the bottom of the valve cover adjusting block, and the upper end of the piston hole is closed;
the piston adjusting block is fixedly arranged in the piston hole in an axially adjustable manner, a piston guide hole is formed in the piston adjusting block, and the lower end of the piston adjusting block protrudes out of the lower end of the valve cover adjusting block;
the rod part of the piston is axially and slidably matched and arranged in the piston guide hole;
the upper end of the elastic piece is connected with the valve cover adjusting block, and the lower end of the elastic piece is connected with the piston to enable the head of the piston to be abutted against the annular limiting surface.
2. The pilot valve for valve force measurement according to claim 1, wherein a bushing is fixedly installed at a lower end of the piston guide hole, and the rod portion is in clearance fit with the bushing.
3. The experimental valve for valve force measurement according to claim 1, wherein the lower end surface of the valve cover and the upper end surface of the valve body are provided with sealing grooves, a valve cover gasket is installed in the sealing grooves, and the valve cover and the valve body are connected in a sealing manner through the valve cover gasket.
4. The experimental valve for valve force measurement according to claim 1, wherein the valve cover adjustment block further comprises a vent hole communicating with the piston hole.
5. The experimental valve for valve force measurement according to claim 1, wherein the upper end surface of the head is fixedly connected to the stem, the lower end surface is attached with the sealing gasket, and the screw penetrates through the sealing ring and the sealing gasket to fix the sealing ring and the sealing gasket on the lower end surface of the head.
6. The pilot valve for valve force measurement according to claim 1, wherein the axis of the central bore of the valve cap is at an angle of 45 degrees to the horizontal.
7. The test valve for valve force measurement according to claim 1, wherein the axial adjustable fit is achieved by threaded engagement between the valve cover adjustment block and the valve cover and between the piston adjustment block and the valve cover adjustment block.
8. Method for determining valve force values, characterized in that the measurement is carried out with a laboratory valve according to any of claims 1 to 7 in combination with a push-pull force meter,
the measurement method is as follows:
a: cutting, namely cutting the assembled experimental valve to cut off part of the valve body, so that the contact condition of the piston head and the annular limiting surface can be observed visually;
b: measuring an opening force value, abutting the head of the piston by using a push-pull force meter, and taking the value of the push-pull force meter in the state as the valve opening force value when the head of the piston is separated from the annular limiting surface by visual inspection;
c: determining an opening force value, comparing the measured valve opening force value with a preset force value, if the measured valve opening force value is not equal to the preset force value, driving the valve cover adjusting block to move in the axial direction of the valve cover adjusting block, adjusting the minimum distance between the lower end surface of the valve cover adjusting block and the annular limiting surface until the measured valve opening force value is the same as the preset force value, and determining the relative position relationship between the valve cover adjusting block and the valve cover;
d: measuring the maximum force value, continuously supporting the push-pull dynamometer until the push-pull dynamometer is not moved, at the moment, supporting the upper end surface of the piston head against the lower end surface of the piston adjusting block, and taking the numerical value of the push-pull dynamometer as the maximum force value in the state;
e: and (3) determining a maximum force value, comparing the measured maximum force value of the valve with a preset maximum force value, if the measured maximum force value of the valve is not equal to the preset maximum force value, driving the piston adjusting block to move in the axial direction of the piston adjusting block, adjusting the minimum distance between the piston adjusting block and the annular limiting surface until the measured maximum force value of the valve is the same as the preset maximum force value, and determining the relative position relation between the piston adjusting block and the valve cover adjusting block.
9. The valve force measuring method of claim 8, wherein when cutting a portion of the valve body, with reference to the annular position limiting surface, the portion of the valve body of the lower portion of the annular position limiting surface is cut away by a portion not greater than one-half of the circumference of the annular position limiting surface, so that the contact between the head of the piston and the annular position limiting surface is exposed.
10. The method of manufacturing a check valve using the measuring method as set forth in claim 8 or 9, wherein the piston adjusting block, the valve cover adjusting block and the valve cover are processed into an integrated structure according to the relative positional relationship between the valve cover adjusting block and the valve cover and between the valve cover adjusting block and the piston adjusting block at the time of determining the opening force value and the maximum force value in the measuring method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210663144.XA CN114935026A (en) | 2022-06-13 | 2022-06-13 | Experimental valve for measuring valve force value, measuring method thereof and one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210663144.XA CN114935026A (en) | 2022-06-13 | 2022-06-13 | Experimental valve for measuring valve force value, measuring method thereof and one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114935026A true CN114935026A (en) | 2022-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210663144.XA Pending CN114935026A (en) | 2022-06-13 | 2022-06-13 | Experimental valve for measuring valve force value, measuring method thereof and one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114935026A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4463929A (en) * | 1981-02-28 | 1984-08-07 | Mannesmann Rexroth Gmbh | Pressure responsive valve |
| US20050166971A1 (en) * | 2004-01-31 | 2005-08-04 | Gennady Arov | Y-pattern piston check valve, piston valve assembly for a Y-pattern piston check valve, and method |
| CN201606549U (en) * | 2010-03-08 | 2010-10-13 | 宁波华成阀门有限公司 | Non-return stop valve |
| CN104565631A (en) * | 2013-10-29 | 2015-04-29 | 中山市玫瑰园环境电器有限公司 | Adjustable water-saving joint |
| CN204922107U (en) * | 2015-09-09 | 2015-12-30 | 雅赛利(台州)制药有限公司 | A rising -down check valve for reation kettle conveying pipeline way |
-
2022
- 2022-06-13 CN CN202210663144.XA patent/CN114935026A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4463929A (en) * | 1981-02-28 | 1984-08-07 | Mannesmann Rexroth Gmbh | Pressure responsive valve |
| US20050166971A1 (en) * | 2004-01-31 | 2005-08-04 | Gennady Arov | Y-pattern piston check valve, piston valve assembly for a Y-pattern piston check valve, and method |
| CN201606549U (en) * | 2010-03-08 | 2010-10-13 | 宁波华成阀门有限公司 | Non-return stop valve |
| CN104565631A (en) * | 2013-10-29 | 2015-04-29 | 中山市玫瑰园环境电器有限公司 | Adjustable water-saving joint |
| CN204922107U (en) * | 2015-09-09 | 2015-12-30 | 雅赛利(台州)制药有限公司 | A rising -down check valve for reation kettle conveying pipeline way |
Non-Patent Citations (1)
| Title |
|---|
| 张传虎, 孙学信: "NSH安全阀在线定压仪在蝶型弹簧安全阀校验中的应用", 热力发电, no. 01, 30 January 2001 (2001-01-30), pages 44 - 47 * |
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